抗拔桩与主体结构相互作用的三维有限元分析  

Three-dimensional Finite Element Analysis for the Interaction of Uplift Pile and the Metro Station Structures

作　　者：徐光苗[1] 

机构地区：[1]广州地铁设计研究院有限公司,广州510010

出　　处：《地下空间与工程学报》2009年第3期604-607,共4页Chinese Journal of Underground Space and Engineering

摘　　要：由于沿海地区地下水位埋藏较浅,常常设计抗拔桩作为地下结构的抗浮措施,而抗拔桩设计最关键的问题为桩的受力状态、承载力以及和主体变形协调的问题。结合广州市某深挖地铁车站抗拔桩设计实际情况,采用ANSYS有限元分析软件,建立了车站主体结构和抗拔桩共同作用的计算模型,进行了车站主体结构与抗拔桩的三维有限元计算。分析研究了在水土各项压力及自重作用下,车站抗拔桩的抗浮应力及变形特征,并着重研究了车站底板、底纵梁及抗拔桩的应力、变形规律。Due to that the ground water level in the coastal areas of China is very low, the uplift piles are widely adopted as the anti - floating structures. The key problems involved in the designing of uplift pile are the stress distribution, the bearing force and the deformation relation to the main structures. Based on the design situation of the uplift pile in a deep subway station in Guangzhou, the calculation model, which describes the interaction of the uplift pile and the major structure of the station, was built by ANSYS. The stress and the deformation character caused by different water - soil pressures and deadweight were analyzed. The laws of deformation and stress of the station floor, the bottom carling and the uplift pile were studied.

关 键 词：抗拔桩 地铁 有限元 人工挖孔桩 

分 类 号：U231.4[交通运输工程—道路与铁道工程]